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Old 10-21-2014, 06:20 PM   #5
NewArt
Artist, 986S tinkerer
 
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Join Date: Aug 2013
Location: Montreal, Canada
Posts: 1,794
This sort of thing can happen when there is a restriction in the vent line (or defective valve) part # 996 110 129 04
At worst, the RPM will kangaroo and stall. This happens when the car is warm and has been sitting for 10 or 20 minutes. Cold start is good. Immediate hot start is good.
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